Which of the following is a heat exchanger?

A. radiator
B. oil cooler
C. heater core
D. all of the above


Answer: D

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List five benefits of endorsement labeling/green certification.

What will be an ideal response?

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The inspector may reject materials or work if:

A. he or she does not like the containers they came in. B. it does not comply with the specifications. C. he or she does not approve of the manufacturer. D. the contractor did not get approval from the inspector beforehand. E. the inspector may not reject any materials or work.

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Technician A says that carbon inside the engine can cause excessive NOx to form. Technician B says that excessive NOx could be caused by a cooling system fault causing the engine to operate too hot. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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For the following systems, determine whether the system described is best modeled as an isolated, closed, or open system:

(a) an inflated tire (b) a lawn sprinkler actively in use (c) a cup filled with liquid water (d) an engine’s radiator (e) a rock formation 200 m below the surface

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